G0 Z17.2
G28
G90
G0 Z17.2
G1 X120.0 Y40.0 F2400.0
G1 X270.0 Y40.0
G1 X270.0 Y290.0
G1 X120.0 Y290.0
G1 X120.0 Y40.0
G0 Z14.7
; Ready for calibration
M84
